000 00391cam a22001097a 4500
008 180718b1949 xxu||||| |||| 00| 0 eng d
082 _aQ21 Un3
245 _aInternational exchange of social welfare personnel
_cby Department of Social Affairs, United Nations
260 _aNew York
_bUnited Nations Publcations
_c1949
300 _a112p.
700 _aUnited Nations. Department of Social Affairs
999 _c417961
_d417961